Hibernate oleanders properly
For this reason, oleanders should not be overwintered outdoors, at least not when the temperatures drop permanently below zero. Theoretically, the Mediterranean ornamental shrub can withstand freezing temperatures of around five degrees Celsius, although this information is not guaranteed - the actual robustness depends largely on the age of the plant, how it is hibernated and the planter. In principle, older specimens are significantly less sensitive to cold than younger ones. Oleander can also be hardened to a certain extent by generally overwintering the shrub at temperatures of around five degrees Celsius - above zero, of course. Furthermore, certain oleander varieties are considered to be less sensitive to cold than others, for example 'Villa Romaine' or 'Album Plenum'.
also read
- Oleander hardly tolerates sub-zero temperatures
- Hibernate oleander properly in the bucket
- Do not overwinter oleanders in the apartment
When is the best time to bring oleander into your home?
The general rule for oleanders is to move them to their winter quarters as late as possible and to put them out again as early as possible. It will be high time to clear when the temperatures drop permanently below about minus five degrees Celsius, and snowfall is predicted. As soon as the weather becomes milder again, however, you can bring the shrub outside again - at best, leave the pot close to the winter quarters so that you can quickly move the plant back into the shelter if necessary. Oleander that has been overwintered cold can go outside from around the beginning to mid-April. However, specimens that have spent the cold season at ten degrees Celsius and more should stay in the cold protection room for another month.
Protect oleanders from freezing temperatures outdoors
It is very important to always protect oleanders from the cold outdoors. Place the planter, wrapped in bubble wrap or similar, near a house wall that emits heat, if possible on an insulating base made of styrofoam.
Tips
If the oleander only freezes back above ground, it can be saved by pruning heavily. In this case, the plant usually sprouts again. However, there is no hope if the roots were exposed to freezing temperatures and therefore frozen to death.
